Flat F 54 Eaton Square London SW1W 9BE Data via plota.co.uk

26/07305/FULL - Full Planning Permission Application Pending
Extensions & alterations

Proposal

Installation of an external condenser at roof level and internal insulation, replacement sashes and crittall windows/doors. Internal alterations. Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
26 Oct 2026
Decision
Expected by 21 Dec 2026

Under consideration

No decision has been issued yet. Plota predicts a decision between 16 Dec 2026 and 25 Dec 2026, from Westminster's recent extensions.

Comments are open until 25 Nov 2026

Comment on this application ↗

Documents 13

Statements & assessments 2

PDF DESIGN ACCESS AND HERITAGE STATEMENT Design and Access Statement · 26 Oct 2026 View ↗ PDF NOISE REPORT Noise impact assessment · 26 Oct 2026 View ↗

Plans & drawings 2

PDF LOCATION PLAN Location Plan · 26 Oct 2026 View ↗ PDF EXISTING AND PROPOSED DRAWING PACK Drawing · 26 Oct 2026 View ↗

Application forms 1

PDF APPLICATION FORM REDACTED Application Form · 26 Oct 2026 View ↗

Consultation & comments 1

PDF NEIGHBOUR NOTIFICATION LETTER (21D) Background Papers · 29 Oct 2026 View ↗

Other documents 7

PDF RECEIPT OF APPLICATION Other · 29 Oct 2026 View ↗ PDF ACK-GENERAL LETTER (G/P/C) Background Papers · 29 Oct 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 29 Oct 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 29 Oct 2026 View ↗ PDF CNSLT-LA SOCIETY Background Papers · 29 Oct 2026 View ↗ PDF SITE NOTICE 21 OR 28 DAYS IF T&C APPL. Background Papers · 29 Oct 2026 View ↗ PDF SITELOCATION Background Papers · 26 Oct 2026 View ↗

All documents on the council site ↗

Associated applications 2

Site constraints 11

Grade II* listed: 51-62, Eaton Square Sw1
List entry 1066853 · The pin is inside its outline · 31 more listed buildings within 150 m (4 Grade II*, 27 Grade II)
Listed building consent is needed for work that affects the special interest of a listed building, inside or out, on top of planning permission. Setting can be a consideration for buildings nearby; there is no fixed radius.
Show the other 31 with distances
Historic England ↗
Belgravia conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Council document ↗
Article 4 direction
Article 4 Basement Development Permitted Rights Removed. Named permitted development rights are withdrawn here.
An Article 4 direction withdraws particular permitted development rights, so work that would normally need no application needs one here. Not every council has published its directions.
Archaeological priority area: City of Westminster APA 3.2
An assessment or field evaluation may be asked for before ground works.
The council or Historic England considers archaeology likely here. A desk-based assessment, and sometimes trial trenching, can be asked for with the application.
Air quality management area: Westminster AQMA
The council has declared the area as failing an air quality objective.
Schemes that add traffic, parking or combustion plant are assessed against the area's action plan and may need an air quality assessment.
Council record ↗
National infrastructure project 401 m away: Thames Tideway Tunnel
The site is 401 m from the project boundary. Waste water treatment, decided. The project page says whether consent was granted. Also within 2 km: London Strategic Heat Main Project (at pre-application, the site is inside its boundary).
Nationally significant infrastructure projects (power stations, electricity lines, pipelines, major roads and railways, harbours, airports and reservoirs) are consented by a Secretary of State under the Planning Act 2008, after an examination by the Planning Inspectorate, rather than by the council. The boundary is the one the Inspectorate consults on and can change as the scheme does. Projects are shown within 2 km of the site.
Planning Inspectorate project page ↗
Registered park or garden 26 m away: The Grosvenor Estate: Eaton Square
Its setting is a consideration for work nearby.
Registered parks and gardens, battlefields, world heritage sites and protected wrecks are designated heritage assets: harm needs clear and convincing justification.
Historic England ↗
Also on the record
Wider setting of protected view 9A.1 King Henry's Mound to St Paul's Cathedral; Inside the City of Westminster built-up area; Public transport access: PTAL 6b (excellent), TfL 2023, for the 100 m square; Tree preservation order 26 m away: W10_A4.
Not affected
Outside flood zones 2 and 3 · Not green belt · No scheduled monument at the site

Checked on 1 November 2026. Historic England, the Environment Agency, Natural England, the Planning Inspectorate, Transport for London (public transport access levels, Powered by TfL Open Data, OGL v3.0, contains OS data © Crown copyright and database right 2025) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.

Building

Floor area190 m² (2,045 sq ft)
Energy ratingB (81 out of 100)
PropertyEnclosed mid-terrace flat, 5 habitable rooms
Built1900 to 1929
HeatingBoiler and radiators, mains gas
WallsSolid brick, as built, no insulation (assumed)

From the energy performance certificate lodged in January 2019, the latest held for this property. The building may have changed since. View the certificate

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Important details

Council
Westminster
Application type
Full Planning Permission Application
Postcode
SW1W 9BE
Received
26 Oct 2026
Validated
26 Oct 2026
Ward
Knightsbridge & Belgravia
Case officer
Show
Target decision
21 Dec 2026
Applicant
Show
Agent
Murray Birrell Ltd

Decision outlook

Day 11 of the 56-day target. Westminster usually decides extensions by day 55.

Day 1145 days to the 56-day target
56%decided within 8 weeks
88%approved
1,937decided in the last year

Plota live figures for extensions decided by Westminster in the last twelve months, from validation. Westminster decision record →

Public comments

No public comments yet.

44 neighbours consulted · Last counted 30 Oct 2026

Read the comments on the council site ↗

Consultation & key dates

Alt. reference
PP-15227951
Planning Portal ref
PP-15227951
Comments by
25 Nov 2026
Site or press notice
4 Nov 2026
Env. assessment
No

Historical activity at this location

25 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2025 Approved
Flat G 45 Eaton Square London SW1W 9BD
Alterations to internal wall and doorway made prior to purchase of property and proposed…
25/06150/LBC
2025
43 Eaton Square London SW1W 9BD
Installation of an internal only, water-based air conditioning system to lower ground flo…
25/07822/LBC
2025
First Floor Flat 75 - 77 Elizabeth Street London SW1W 9PJ
Installation of replacement sashes within the existing box frames including new slimline…
25/07678/LBC
2025
First Floor Flat 75 - 77 Elizabeth Street London SW1W 9PJ
Installation of replacement sashes within the existing box frames including new slimline…
25/07677/FULL
2025 Approved
Flat G 54 Eaton Square London SW1W 9BE
Installation of secondary glazing to the front three living/ dining room windows at third…
25/06174/LBC
2025
48 Eaton Square London SW1W 9BD
T862 - Magnolia grandiflora: Prune from adjacent structure - to clear the building wall b…
25/07054/TCA
2025
44 - 47 Eaton Square London SW1W 9BD
T851 - Magnolia grandiflora: Prune from adjacent structure - to clear the building wall b…
25/07053/TCA
2025
54 Eaton Square London SW1W 9BE
Replacement doors and Windows
25/06993/LBC
2025
54 Eaton Square London SW1W 9BE
Replacement timber doors and windows to rear first floor level (Flat B). (Linked 25/06993…
25/06992/FULL
2025 Approved
1B Chester Row London SW1W 9JF
Extension at rear roof level, relocation of existing plant enclosure, simplification of r…
25/05281/FULL
2025
49 Eaton Square London SW1W 9BD
Refurbishment and upgrading of interiors to enhance its spatial functionality, modernisin…
25/06835/LBC
2025 Approved
58 Eaton Mews West London SW1W 9ET
T1 Palm tree: Fell to ground and treat stump.
25/05654/TCA
2025 Approved
81A Elizabeth Street London SW1W 9PG
Installation of an air conditioning unit at roof level and internal units in the second a…
25/04263/LBC
2025 Approved
81A Elizabeth Street London SW1W 9PG
Installation of an air conditioning unit at roof level.
25/04262/FULL
2025
38 Chester Square London SW1W 9HT
Upgrading of existing mechanical services, including installation of new boiler, hot wate…
25/01913/LBC
2024 Approved
38 Chester Square London SW1W 9HT
Internal refurbishment works, including new kitchen and bathroom, replacement of existing…
24/08184/LBC
2024
58 Elizabeth Street London SW1W 9PB
Display of non illuminated floral wreath measuring 3m X 2.2m
24/08365/ADV
2024
1B Chester Row London SW1W 9JF
Erection of a rear extension at upper first floor to add an additional bedroom, alteratio…
24/08272/FULL
2024
16 Chester Row London SW1W 9JH
Bay laurel (T6) - Prune western crown up to 1.5m branch lengths to give clearance of subj…
24/07595/TCA
2024
10 Chester Row London SW1W 9JH
T1 English oak - Crown reduce height and spread 3-3.5m branch lengths pruning to establis…
24/07591/TCA
2021
9 South Eaton Place London SW1W 9ES
Alteration to first floor facade, including replacement of windows with timber French doo…
21/05774/FULL
2021 Refused
54-56 Elizabeth Street London SW1W 9PB
Display of internally illuminated fascia sign measuring 1.25m x 0.88m and vinyl to glazin…
21/05068/ADV
2021 Approved
1B Chester Row London SW1W 9JF
Installation of rooftop plant in an acoustic and visual enclosure on a lower flat roof to…
21/01546/FULL
2021 Approved
1B Chester Row London SW1W 9JF
External alterations to front facade including alterations to windows, removal of string…
21/01543/FULL
2021 Refused
1B Chester Row London SW1W 9JF
Creation of a roof terrace at first floor level to the rear.
21/01544/FULL
Westminster
Planning Authority Score
3.5/10
Below average
#221 of 296 councils
Relevant to this application:
Householder decisions

Westminster is slower than most councils at deciding householder applications, ranking #258 out of 296. Only 28% of applications have the time limit extended, well below the 41% national average - the council usually decides on time. Westminster is also one of the strictest councils - it refuses more householder applications than almost any other, with only 81% approved vs 90% nationally.

One of the strictest councils
only 81% approved vs 90% nationally
These figures are council-wide context, not a prediction for this application. View full council performance
Westminster decision statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #201 of 296
81%
Householder approved
Below avg (90%) #277 of 296
44%
Decided in 8 weeks
Below avg (63%) #258 of 296
28%
Extended time limit
Below avg (41%) #46 of 296
83%
Minor dwellings approved
12 decided (1-9 homes)
67%
Major dwellings approved
3 decided (10+ homes)
81%
Change of use approved
133 decided
4,602
Total decisions
648 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings

Energy performance: Energy performance certificates from the Energy Performance of Buildings Register, Ministry of Housing, Communities and Local Government. Contains public sector information licensed under the Open Government Licence v3.0. © Crown copyright 2026.